Mixer



FIG. 1 is a perspective view of a mixer showing our new design, the broken line showing of the stand being for illustrative purposes only;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a mixer, as shown and described. 